Sprocket



FIG. 1 is a front elevation view.

FIG. 2 is a cross-sectional view at line 2-2 in FIG. 1.

FIG. 3 is a rear elevation view.

FIG. 4 is a side view; and,

FIG. 5 is a front perspective view.

The broken line showing of the sprocket is included for the purpose ofillustrating portions of the sprocket and forms no part of the claimeddesign.

The ornamental design for a sprocket, as shown and described.